共查询到18条相似文献,搜索用时 171 毫秒
1.
给出一种辅助方程的几种新结论, 构造了广义 Camassa-Holm 方程的多种无穷序列新解. 首先, 利用首次积分与函数变换, 给出了一种辅助方程的新解、B¨acklund 变换和解的非线性叠加公式. 然后, 通过函数变换, 把广义Camassa-Holm 方程的求解问题转化为非线性常微分方程的求解问题. 最后, 借助符号计算系统 Mathematica, 构造了广义Camassa-Holm方程的多种无穷序列新解. 相似文献
2.
套格图桑 《高校应用数学学报(A辑)》2017,32(1)
给出函数变换,变量分离形式解与第一种椭圆方程相结合的方法,构造了(2+1)维modified Zakharov-Kuznetsov(m ZK)方程的多种复合型新解.步骤一,给出两种函数变换,将(2+1)维m ZK方程转化为能够获得变量分离解的非线性发展方程.步骤二,给出非线性发展方程的变量分离形式解,通过第一种椭圆方程及其相关结论,构造了(2+1)维m ZK方程的双孤子解和双周期解等复合型新解. 相似文献
3.
《纯粹数学与应用数学》2016,(1)
给出一种辅助方程的几种新结论,构造了广义Camassa-Holm方程的多种无穷序列新解.首先,利用首次积分与函数变换,给出了一种辅助方程的新解、B¨acklund变换和解的非线性叠加公式.然后,通过函数变换,把广义Camassa-Holm方程的求解问题转化为非线性常微分方程的求解问题.最后,借助符号计算系统Mathematica,构造了广义Camassa-Holm方程的多种无穷序列新解. 相似文献
4.
《数学的实践与认识》2019,(23)
给出第一种椭圆方程与函数变换相结合的方法,通过几个步骤,构造了(3+1)维Klein-Gordon方程的多种新解.步骤一、根据Jacobi椭圆函数的性质,获得了第一种椭圆方程的几种新解.步骤二、用第一种椭圆方程与函数变换相结合的方法,将(3+1)维Klein-Gordon方程的求解问题转化为非线性代数方程的求解问题.步骤三、借助符号计算系统Mathematica求出该方程组的解,并构造了由Riemannθ函数、Jacobi椭圆函数、双曲函数和三角函数两两组合的双周期解和双孤子解等多种复合型新解. 相似文献
5.
通过函数变换与第二种椭圆方程相结合的方法,构造变系数耦合KdV方程组的复合型新解.步骤一、给出第二种椭圆方程的几种新解.步骤二、利用函数变换与第二种椭圆方程相结合的方法,在符号计算系统Mathematica的帮助下,构造变系数耦合KdV方程组的由Riemannθ函数、Jacobi椭圆函数、双曲函数、三角函数和有理函数组合的复合型新解,这里包括了孤子解与周期解复合的解、双孤子解和双周期解. 相似文献
6.
利用辅助方程与函数变换相结合的方法,构造了Degasperis-Procesi(D-P)方程的无穷序列类孤子新解.首先,通过两种函数变换,把D-P方程化为常微分方程组.然后,利用常微分方程组的首次积分,把D-P方程的求解问题化为几种常微分方程的求解问题.最后,利用几种常微分方程的Bcklund变换等相关结论,构造了D-P方程的无穷序列类孤子新解.这里包括由Riemannθ函数、Jacobi椭圆函数、双曲函数、三角函数和有理函数组成的无穷序列光滑孤立子解、尖峰孤立子解和紧孤立子解. 相似文献
7.
套格图桑 《数学的实践与认识》2019,(6)
利用一种函数变换与第一种椭圆方程相结合的方法,构造了常系数耦合mKdV方程的由Riemann θ函数、Jacobi椭圆函数、双曲函数和三角函数两两组合的双孤子解、双周期解以及孤子解与周期解组合的无穷序列复合型新解. 相似文献
8.
9.
多线性分离变量法已成功地应用于诸多(2+1)维非线性可积系统.将该方法拓展运用于(3+1)维破碎孤子方程中,获得了含任意函数的变量分离解.通过适当地设定任意函数的形式,得到了(3+1)维破碎孤子方程丰富的局域激发模式. 相似文献
10.
杨征 《应用数学与计算数学学报》2013,(4):415-420
利用Riccati方程映射法和变量分离法,得到了推广的(2+1)维浅水波系统的变量分离解(包括孤波解、周期波解和有理函数解).根据得到的孤波解,构造出了方程的单孤子和双孤子结构,研究了孤子的混沌行为. 相似文献
11.
12.
With the aid of Maple symbolic computation and Lie group method, PKPp equation is reduced to some (1+1)-dimensional partial differential equations, in which there are linear PDE with constant coefficients, nonlinear PDE with constant coefficients, and nonlinear PDE with variable coefficients. Using the separation of variables, homoclinic test technique and auxiliary equation methods, we obtain new abundant exact non-traveling solutions with arbitrary functions for the PKPp. 相似文献
13.
From the viewpoint of inverse problem research, by using the Hirota’s bilinear transformation method and direct variable separation ansatz, some mKdV-type equations with nonlinear variable separation solutions are unified constructed. These exact special solutions include several lower-dimensional arbitrary functions which can be used to express various soliton structures. 相似文献
14.
Based on the homogeneous balance method,the Jacobi elliptic expansion method and the auxiliary equation method,the first elliptic function equation is used to get a new kind of solutions of nonlinear evolution equations.New exact solutions to the Jacobi elliptic function of MKdV equations and Benjamin-Bona-Mahoney (BBM) equations are obtained with the aid of computer algebraic system Maple.The method is also valid for other (1+1)-dimensional and higher dimensional systems. 相似文献
15.
By using solutions of an ordinary differential equation, an auxiliary equation method is described to seek exact solutions of nonlinear evolution equations with variable coefficients. Being concise and straightforward, this method is applied to the mKdV equation with variable coefficients. As a result, new explicit solutions including solitary wave solutions and trigonometric function solutions are obtained with the aid of symbolic computation. 相似文献
16.
《Communications in Nonlinear Science & Numerical Simulation》2011,16(6):2421-2437
Using the solutions of an auxiliary differential equation, a direct algebraic method is described to construct several kinds of exact travelling wave solutions for some Wick-type nonlinear partial differential equations. By this method some physically important nonlinear equations are investigated and new exact travelling wave solutions are explicitly obtained. In addition, the links between Wick-type partial differential equations and variable coefficient partial differential equations are also clarified generally. 相似文献
17.
With the aid of Maple symbolic computation and Lie group method, PKPp equation is reduced to some (1 + 1)-dimensional partial differential equations, in which there are linear PDE with constant coefficients, nonlinear PDE with constant coefficients, and nonlinear PDE with variable coefficients. Using the separation of variables, homoclinic test technique and auxiliary equation methods, we obtain new abundant exact non-traveling solution with arbitrary functions for the PKPp. 相似文献
18.
提出了一种寻找变系数非线性方程精确解的新方法—相容方程法,利用该方法求出了变系数非线性KP方程的精确解,从而证明了这种方法是十分有效的. 相似文献